If you open it, close it.
If you turn it on, turn it off.
If you borrow it, return it.
If you don’t know how to use it, leave it alone.
If you break it, fix it.
If you can’t fix it, report it.
If you make a mess, clean it up.
If you move it, put it back.
If it doesn’t concern you, keep it that way.
There are different versions, but the gist is the same. Take responsibility for your self and your actions. Don’t make other people clean up after you or stumble onto problems you created.